资讯

Sometimes the name of the compound gives information about the formula of that compound. Names of these compounds have prefixes that give the number of atoms of certain elements in each molecule.
But sometimes the symbol comes from a name for the element that is not an ... There are very many different compounds and all compounds are molecules. Carbon dioxide is a compound of carbon ...
Originally limited to the study of compounds produced by living organisms, organic chemistry has been broadened to include human-made substances ... Some pharmaceutical companies deal in brand-name (i ...